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US 7,192,620 B1Granted
Mold-release coating systems
AssigneePolymerit
InventorBror H. Hanson
Life of this patent
Estimating the term…
Abstract
A mold-release coating system includes a barrier coating of a substantially liquid wax material. The wax material is deposited onto the mold surface. The wax material includes about 7 to about 10 weight percent solids. The wax material is permitted to substantially dry after deposition onto the mold surface. The mold-release coating system also includes a release powder deposited onto the barrier coating after the wax material has been permitted to substantially dry after deposition onto the mold surface.
Claims2
A method for forming a mold-release coating system on a mold surface, said method comprising the steps of:
- providing a barrier coating of a substantially liquid wax material, wherein the wax material includes about 7 to about 10 weight percent solids;
- applying the wax material onto the mold surface;
- permitting wax material to substantially dry after application onto the mold surface;
- providing a release powder, wherein the release powder includes a plurality of droplets of a silicone material encapsulated by a substantially thermoplastic powder material;
- and
- applying the release powder onto the barrier coating after the wax material has been permitted to substantially dry after application onto the mold surface.
3 more elements
Dependencies are inferred from the claim text.